539883 3 Goulds 3656 M Series End Suction Flanged Centrifugal Pump Close Coupled Specifications
: Pump 539883 3 Goulds 3656 M Series End-Suction Flanged Centrifugal Pump Close-Coupled Specifications 539883_3_Goulds 3656 M Series End-Suction Flanged Centrifugal Pump Close-Coupled Specifications pdf
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ENGINEERING DATA D3656M Model 3656 M&L-Group Close-Coupled Unit TYPICAL ENGINEERING SPECIFICATIONS I. SCOPE The contractor shall provide (quantity) close coupled, end suction centrifugal pump unit/s, Model 3656 M&L-Group as manufactured by Goulds Water Technology or equal. All pump units shall be of one manufacturer and provided complete including electric motor drive. II. CONDITIONS OF SERVICE A. Equipment item number B. Flange Inside Diameter Suction (inches) FF Discharge (inches) FF C. Primary Service Condition Capacity (GPM) Total Head (feet) Efficiency (%) D. Minimum Total Head at Shutoff (feet) E. Maximum Impeller Diameter (inches) F. Operating Speed (RPM) G. Maximum Motor HP III. PUMP CONSTRUCTION Each pump shall be designed for clockwise rotation viewed from driven end and include the following design features. A. PUMP END COMPONENTS A.1. Casing The pump casing shall be spiral volute type, back pull-out design with ANSI Class 150 flat faced flanged suction and discharge connections above 2½" size and shall be constructed of Cast Iron, ASTM A48 CL30 material. The pump discharge nozzle shall be tangentially oriented. The complete pump unit shall be supported by the power frame. A pump casing drain shall be provided with a (zinc plated steel) pipe plug. A.2. Wear Ring Replaceable casing and seal housing wear ring of , (Cast Iron ASTM A48 CL20 or Lead Free Bismuth Bronze) shall be provided and held securely by means of interference fits. A.3. Impeller The pump impeller shall be of enclosed design, constructed of , (Cast Iron ASTM A48 CL20 or Lead Free Sil-Brass ASTM B584) material and key driven. A stainless steel bolt and washer shall provide positive attachment of the impeller to the motor shaft. A.4. Seal Housing/Adapter The seal housing and motor adapter shall be of 1-piece design, constructed of Cast Iron, ASTM A48 CL20. Registered mating fits to the pump casing and power frame shall maintain positive unit alignment and support. Sealing of casing pressure shall be maintained by an “O-ring” of BUNA-N, EPR or Viton material. Motor and casing connection shall be held securely by means of grade 5, high strength hex cap screws. A bottom drainage port shall be provided to allow condensation or seal leakage to drain and not be retained within the adapter. A.5. Mechanical Seal The pump shaft seal shall be a John Crane Type 21 mechanical seal or equal constructed of the following materials. Packed box shaft sealing is also available. Seal Type Standard Stationary Face Rotating Metal Elastomers Face Components Ceramic Option Option Carbon BUNA-N EPR Sil-Carbide Viton Sil-Carbide Option 18-8 SS A.6. Shaft Sleeve The pump shaft sleeve shall be constructed of AISI Type 303 stainless steel and shall be of the hook type design, locked in place by the impeller without necessity of other mechanical locking devices. IV. ELECTRIC MOTOR The pump drive motor shall be non-overloading of NEMA standard design JM-frame suitable for horizontal mounting and close coupled to the pump unit as described above. The motor rating shall be: HP, RPM phase, Hz, volts Totally enclosed, fan cooled enclosure 1.15 Service Factor High Efficiency V. TESTING A. Each pump casing shall be hydrostatically tested by the manufacturer in accordance with Hydraulic Institute Standards at 250 PSIG. B. Production performance testing will be conducted by the manufacturer on each pump unit. Head at three operating points (70% of BEP, BEP and 120% of BEP) will be measured at design speed to verify performance. Xylem Inc. 2881 East Bayard Street Ext., Suite A, Seneca Falls, NY 13148 Phone: (800) 453-6777 Fax: (888) 322-5877 www.xyleminc.com/brands/gouldswatertechnology Goulds is a registered trademark of Goulds Pumps, Inc. and is used under license. © 2012 Xylem Inc. D3656M July 2003
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